<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import { debounce } from '@/utils'

const animationDuration = 6000

export default {
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    },
    list: {
      type: Array,
      default: () => []
    }
  },
  data() {
    return {
      chart: null
    }
  },
  watch: {
    list: {
      deep: true,
      immediate: true,
      handler(val) {
        this.initChart()
      }
    }
  },
  mounted() {
    // this.initChart()
    this.__resizeHandler = debounce(() => {
      if (this.chart) {
        this.chart.resize()
      }
    }, 100)
    window.addEventListener('resize', this.__resizeHandler)
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    window.removeEventListener('resize', this.__resizeHandler)
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      console.log( this.list.map(i => i.name))
      let xAxisArr = this.list.map(i => i.name)
      this.chart = echarts.init(this.$el, 'macarons')

      this.chart.setOption({
        tooltip: {
          trigger: 'axis',
          axisPointer: { // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        grid: {
          top: 10,
          left: '2%',
          right: '2%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: {
          type: 'category',
          data:xAxisArr,
          axisTick: {
            alignWithLabel: true
          },
          axisLabel:{
            interval:0
          }
        },
        yAxis: {
          type: 'value',
          // axisTick: {
          //   show: false
          // }
        },
        series: [{
          // name: 'pageA',
          type: 'bar',
          // stack: 'vistors',
          // barWidth: '60%',
          data: this.list.map(i => i.value),
          showBackground: true,
          backgroundStyle: {
            color: 'rgba(180, 180, 180, 0.2)'
          }
        }
        // , {
        //   name: 'pageB',
        //   type: 'bar',
        //   stack: 'vistors',
        //   barWidth: '60%',
        //   data: [80, 52, 200, 334, 390, 330, 220],
        //   animationDuration
        // }, {
        //   name: 'pageC',
        //   type: 'bar',
        //   stack: 'vistors',
        //   barWidth: '60%',
        //   data: [30, 52, 200, 334, 390, 330, 220],
        //   animationDuration
        // }
        ]
      })
    }
  }
}
</script>
